Unit 1 to E

Question 1

A positive number and a unit having appropriate dimensions. No unit is stated if the dimensions are those of a pure number

Answer 1

Magnitude

Question 2

relationship between the vector and given reference lines and/or planes.

Answer 2

Orientation

Question 3

relationship between the vector and given reference lines and/or planes.

Answer 3

Orientation

Question 4

the order of two points on a line parallel to the vector

Answer 4

Sense

Question 5

together determine the direction of a vector

Answer 5

Orientation and Sense

Question 6

hypothetical infinite straight line collinear with the vector

Answer 6

Line of Action

Question 7

Classification of Vectors

Answer 7

Free
Sliding
Bound/Fixed
Unit

Question 8

may be moved anywhere in space provided it maintains same magnitude and direction

Answer 8

Free vector

Question 9

may be applied at any point along its line of action

Answer 9

Sliding vector

Question 10

must remain at the same point of
application

Answer 10

Bound/Fixed

Question 11

A unit vector (versor) is a vector with the magnitude equal to 1

Answer 11

Unit Vector

Question 12

is an algebraic operation that takes two equal-length sequences of numbers (usually coordinate vectors)

Answer 12

Dot product

Question 13

binary operation on two vectors in three-
dimensional space, and is denoted by the symbol x.

Answer 13

Cross product

Question 14

A change of position relative to a reference point.

Answer 14

Motion

Question 15

Types of Motion

Answer 15

Absolute
Relative
Constrained
Plane
Helical
Spherical

Question 16

motion of a body relative to a point on the earth.

Answer 16

Absolute

Question 17

motion of a body relative to a point on the earth

Answer 17

Absolute

Question 18

it is guided by contact with other bodies, or by external forces, that any point on it is obliged to move in a definite path

Answer 18

Constrained

Question 19

of a body is obtained when all points in it move in parallel or coincident planes

Answer 19

Plane

Question 20

is executed when a body rotates about an axis and at the same time moves parallel with the same axis, two motions bearing a fixed ratio to each other

Answer 20

Helical

Question 21

is when a body is moving in such a way that any point in it remains at a constant distance from a fixed point.

Answer 21

Spherical Motion

Question 22

acceleration which causes the direction of motion of a body to change.

Answer 22

Normal Acceleration

Question 23

the linear acceleration in the direction of motion at the instant considered and is measured by the rate of change of speed along its path

Answer 23

Tangential

Question 24

is the time required for a complete revolution of generating line

Answer 24

Period

Question 25

is equal to the length of the generating radius

Answer 25

Amplitude

Question 26

Angular position of the generating line at any instant with respect to a reference line

Answer 26

Phase

Question 27

point on one body about which the other rotates at the instant considered

Answer 27

Instant Center/centro

Question 28

It is the point at which the bodies are relatively at rest at the instant considered

Answer 28

Instant cente/Centro

Question 29

The theorem states that the instant centers for any three bodies having plane motion lie along the same straight line

Answer 29

Kennedy’s Theorem